Our 7X50 binoculars is made to military specifications including a range finding reticule. The optics are made to exacting military specifications in order to give the viewer excellent brightness, exacting image clarity and unparallel true color of the image whether it is a flower, bird where color is important or a military target. The user can have confidence whether it is being used in a military, public security, traffic control, boating, aviation or any other appliation requiring confidence of equipment. Features: 1. with built in illumination compass 2. Optimal environment: -35 -55( -35F - : 131F) Technical specification: Magnification: 7x Field of view: 7.5 degree( 394 ft at 1000yds; 131m at 1000m) Exit pupil diameter: 7.1mm Exit pupil distance: 21.8mm Diopter adjusting range: -5-+7diopter Interpupillary distance: 56-72mm Resolution: <=5.5'' Size: (length,width, height): 218mm, 105mm, 157mm Weight: 1.5kgs( 3.08lbs)